{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["DNA", "cell line", "protein", "RNA", "cell type"], "input": "The response to antigen proceeds at the T helper cell level through two independent forms of cellular collaboration , contact and lymphokine ."}
{"DNA": [], "cell line": [], "protein": ["lymphokine"], "RNA": [], "cell type": ["T helper cell"]}